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首页> 外文期刊>Ethology >Sex Differences in Retrieval Behavior by the Biparental Convict Cichlid
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Sex Differences in Retrieval Behavior by the Biparental Convict Cichlid

机译：双亲定罪的丽鱼科鱼在检索行为中的性别差异

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Biparental species occasionally demonstrate a division of roles in which parents perform sex-typical tasks, with females offering direct care and spending the majority of their time with the offspring while males are more indirect in their care, providing the majority of defense against potential brood predators. To examine the flexibility in the sex-typical roles shown by convict cichlids (Amatitlania nigrofasciata), we displaced non-swimming young at three different distances from the nest and then analyzed the retrieval behaviors of each parent. Retrieval of altricial young is a behavior commonly used to measure parental care in mammalian studies, but has rarely been used in other taxa. We found sex differences in retrieval behavior: on average, females retrieved young close to the nest and males retrieved young far from the nest. This difference in parental contribution suggests a division of labor with sex-specific roles. Sex differences may be due to proximity to young and/or apparent risk of offspring predation. Additionally, we found that latency to first retrieval and total time spent retrieving young remained consistent across the various displacement distances, suggesting that retrieval is an essential parental behavior. Additionally, we include observations of wriggler retrieval by parents in a natural population of Costa Rican convict cichlids.
机译：双亲物种偶尔会表现出不同的角色划分，父母在其中执行性别典型任务，其中雌性提供直接照料，大部分时间与后代在一起，而雄性则更间接地照料，从而为大多数潜在的掠食者提供防御。为了检查定罪丽鱼科鱼（Amatitlania nigrofasciata）在性别典型角色中的灵活性，我们将非游泳的幼鸟从巢中移出了三个不同的距离，然后分析了每个父母的取回行为。哺乳幼崽是哺乳动物研究中通常用来衡量父母护理水平的一种行为，但很少在其他分类群中使用。我们发现在取回行为上存在性别差异：平均而言，雌鸟取回靠近巢穴的幼鸟，雄鸟取回远离巢穴的幼鸟。父母贡献的这种差异表明，分工具有性别特定角色。性别差异可能是由于接近年轻和/或明显的后代捕食风险。此外，我们发现在各个位移距离上，初次检索的潜伏期和检索年轻人的总时间保持一致，这表明检索是父母必不可少的行为。此外，我们还包括了在哥斯达黎加定罪丽鱼科鱼自然种群中父母对蠕动虫取回的观察结果。

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